Improved lubricator for loose pulleys



J. W. BROOKWAY. 111111210112011 F011 Loos PULLBY.

102,215. Paten-ted Apr. 26, 1870.

unina sans @met @Mira Leners Patent No.1o2,215, dated Almz 26, 1870.

IMPRQVD A1 '.|'U'.BRICA!!!OR FOR LOOSE PULLEYS.

The Schedule referred to in these Letters Patent and making part of the same.

Zb all whom it may concern.-

'e it known that I, JOSEPH W. BnooKwAY, of the city and State of New York, have inveuted'aud made a new and useful Improvement in Lubricating Loose Pulleys, and the following is declared to be a correct description thereof. Y

Dii'liculties have heretofore arisen` in lubricating loose pulleys iu machinery, because the oil-holder has generally revolved with the pulley; hence, the centrii'ugal action usually throws the toil away from the j ournal, either wasting the same or preventing itlubricat-ing the journal'besides these difficulties, another arises from the fact that the loose pulley has to be stopped for lubrication this cannot be-done frequently while the machinery is in motion, because the friction causes the loose pulley to revolve with the contiguous fast pulley.

lo obviate these difficulties, a device has been made use of in which an oilholder is provided below the journal-box, from which the oil is drawn up by the revolution of the shaft and loose pulley.

The nature of my said invention consists in a tubular journal of the loose pulley, extending into the journal-box and surrounding the shaft, said tube being perforated for the passage of oil from the oilholder upon the box to the shalt within the said tube; thereby the tube of the loose pulley becomes the journal-box of the shaft when the loose pulley is stat-iou ary, and said sleeve or tube becomes the journal of the loose pulley when the same is` being revolved within the journal-box and upon' the shaft, the oil being free to pass to either or both surfaces that may be in moilon.

- ln the drawing- Figure l is a section, longitudinally, of the shaft, and

Figure .2 is a section at the line z x, transversely of the journal and box.

The shaft a carries thereto.

the pulley b, firmly attached l c is the loose pulley, with a tubular journal, d, surrounding the shaft a, and extending into the journalbox` e, that is of any desired character or size, and

may be upon aline shaft in the form of a hanger,'or ,upon other mechanism.

The tube d isperforated with one'or moreholes h, as seen' most clearly in g. 2, and the oil-holder or lubrcator f is provided up'outhe journal-box. This may be of any desired character.

It-will be now understood that the tube d and loose pulley c revolve together upon the saft a, when that is stationary, and-also within the box e, and the oil is free to lnbricate the exterior of the tube d Within the boxe, and the interior of this tube d fis lubricated through the 4holes h, and I prefer that there be a spiral groove in the'shaft a to act to cause the oil to move toward the loose pulleyv- So 4also when the shaft a is revolved by the pulley b the-tube d becomes its g'ournal-box, within which the said shaft a revolves.

This mode of construction obviates allthe diiculties aforesaid, and enables me to lubricate all parts fully, and the tube. d may be formed with the loose pulley, or be a separate tube driven into the hub of said loose pulley, hence, this improvement can be applied toa'loose pulley already made, by boring out the f said pulley and the journal-box, and, in case of the parts becoming worn, the tube d can be replaced.

I claim as my invention- The tubular journal d, Within the journal-box e, formin g the bearing for the revolving shaft tf1/,in combination with the pulley b on the shaft a, the pulley c on the tubular journal d, and the openings through said tubular journal d, for oil to pass to the revolving shaft a, as and for the purposes specified.

' Signed this 23d day of February, A. D. 1870.

- JOSEPH W. BROOKWAY.

Witnesses HAROLD SERRELL, Gno. T. PINCKNEY. 

